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Finding the Fourth Proportional to 668.16, 995.52 and 624

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Solution

The fourth proportional to 668.16, 995.52 and 624 is: 929.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    668.16 : 995.52 = 624 : x
  2. Step 2: Convert to fraction form
    668.16/995.52 = 624/x
  3. Step 3: Cross multiply
    668.16x = 995.52 × 624
  4. Step 4: Simplify right side
    668.16x = 621,204.48
  5. Step 5: Solve for x
    x = 621,204.48/668.16
  6. Step 6: Final answer
    x = 929.72

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.